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28552752971 = 139607933791
BaseRepresentation
bin11010100101111000…
…000110111101001011
32201200220001010200022
4122211320012331023
5431434001043341
621041132331055
72030364252521
oct324570067513
981626033608
1028552752971
1111122314a06
12564a313a8b
1329005b3302
14154c158311
15b21a4ee4b
hex6a5e06f4b

28552752971 has 8 divisors (see below), whose sum is σ = 28763750400. Its totient is φ = 28341835560.

The previous prime is 28552752967. The next prime is 28552752997. The reversal of 28552752971 is 17925725582.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28552752971 - 22 = 28552752967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28552752901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828086 + ... + 861876.

It is an arithmetic number, because the mean of its divisors is an integer number (3595468800).

Almost surely, 228552752971 is an apocalyptic number.

28552752971 is a deficient number, since it is larger than the sum of its proper divisors (210997429).

28552752971 is a wasteful number, since it uses less digits than its factorization.

28552752971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40009.

The product of its digits is 3528000, while the sum is 53.

The spelling of 28552752971 in words is "twenty-eight billion, five hundred fifty-two million, seven hundred fifty-two thousand, nine hundred seventy-one".

Divisors: 1 139 6079 33791 844981 4696949 205415489 28552752971